Portsmouth Rhode Island Weather Almanac  
Thursday, August 19, 2021  
Mostly Cloudy & Heavy Shower early, Cloudy Day to Mostly Cloudy PM, Windy, Warm & Muggy, Remnants of TS Fred  
  Climate Normal Period Climate Record Period
  1991 - 2020 1893 - 2021
    August 19, 2021   Record   Record  
Observed Daily Data   2021   2020   Norm   Depart   Highest   Lowest  
Maximum Temperature   78   80   78   +0   89   in 2002   64   in 1927  
Minimum Temperature   71   62   63   +8   72   in 1956   51   in 2007  
Average Temperature   75   71   71   +4   80   in 2002   61   in 2007  
 Month Avg Max Temperature   80.6   83.3   79.1   +1.5   84.6   in 1944   72.4   in 1964  
Month Avg Min Temperature   65.9   67.9   64.4   +1.5   70.5   in 1988   56.0   in 1964  
Month Average Temperature   73.6   75.8   71.7   +1.8   77.5   in 1988   64.5   in 1964  
High Heat Index   84   81   79   +5   95   in 2009            
Low Wind Chill                             #N/A   in #N/A  
HDD   0   0   0   +0   4   in 2007   0   in    
Month HDD   0   0   0   +0   24   in 1964   0   in 2021  
Season HDD   9   0   3   +6   34   in 1914   0   in 2020  
CDD   10   6   6   +4   15   in 2002   0   in 2014  
Month CDD   163   205   139   +24   237   in 1988   15   in 1964  
Year CDD   553   669   467   +86   669   in 2020   210   in 1902  
Maximum Dew Point   77   65   68   +9   77   in 2021   51   in 1975  
Minimum Dew Point   70   57   59   +11   71   in 2015   45   in 1975  
Average  Dew Point   74   61   64   +10   74   in 2021   48   in 1975  
 Month Avg Max Dew Point   71.2   71.5   68.6   +2.5   73.9   in 2018   57.9   in 1964  
Month Avg Min Dew Point   62.8   63.7   60.5   +2.3   67.6   in 2018   47.4   in 1964  
Month Average Dew Point   67.0   67.6   64.6   +2.4   70.7   in 2018   52.7   in 1964  
Precipitation   .19   .11   .12   +.07   3.28   in 1955            
One Hour   .19   .08           1.95   in 1955            
Hourly Rate   4.43   .60           4.43   in 2021            
Month Precipitation   4.21   1.06   2.27   +1.94   9.62   in 1946   .15   in 1956  
Year Precipitation   27.04   23.44   27.92   -.88   43.94   in 1983   15.70   in 1957  
Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A            
Snow Depth   #N/A   #N/A           #N/A   in              
Month Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in    
Season Snow   #N/A   #N/A   #N/A   #N/A   #N/A   in #N/A   #N/A   in #N/A  
    August 19, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   99%   94%   93%   +6%   100%   in 2017   70%   in 1975  
Minimum Humidity   90%   53%   59%   +31%   92%   in 1955   31%   in 1999  
Average Humidity   95%   74%   76%   +19%   96%   in 1955   53%   in 1975  
Maximum Barometer   30.14   29.99   30.06   +00.08   30.43   in 1904   29.78   in 1965  
Minimum Barometer   29.85   29.88   29.84   +00.01   30.23   in 1996   28.47   in 1991  
Average Barometer   30.00   29.94   29.95   +00.05   30.32   in 1996   29.37   in 1991  
Average Wind   8.9   2.8   5.8   +3.1   18.7   in 1991   0.9   in 1978  
Direction   SSW   NNW   SSW       ESE         S        
High Wind Gust   27   12   21   +6   105   in 1991   11   in 1978  
Direction   SSW   SW   SSW       ESE         SSW        
Maximum Water Temp   74.6   67.6   71.8   +2.8   75.6   in 2003   67.6   in 2020  
Minimum Water Temp   71.8   65.7   68.6   +3.2   73.2   in 2018   64.2   in 2008  
Average Water Temp   73.2   66.7   70.2   +3.0   74.0   in 2018   66.7   in 2020  
Sunrise/ AM Twilight   5:59:21 AM   5:30:06 AM            
Sunset / PM Twilight   7:37:52 PM   8:07:08 PM            
Length Of Day   13:38:31                          
Special Conditions   Fog, Thunderstorm                          
Comments   Remnants of Tropical Storm Fred                      
Hour-by-Hour Weather For August 19, 2021            
Climate Weather for August 19            
Weather History For August 19            
Weather Calendar            
Back To Weather Stat Page            
Home